<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        const obj={
            name:'zz',
            hobbises:['xx','yy']
        }
        Object.freeze(obj);//变成不可改变的obj 只是浅层的不可改变
        obj.hobbises.unshift('ww');
        obj.name='qq';
        obj.sex='man';
        //有什么方法可以能让 obj 不可以被改变？
        console.log(obj);
    </script>
</body>
</html>